<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
</head>
<body>
    <div id="app">
        <h3>请选择您喜欢的课程
            <select v-model="selected">
                <option v-for="option in options" v-bind:value="option.value">{{ option.text }}</option>
            </select>
            <span>选择的课程： {{ selected }}</span>
        </h3>
    </div>


<!--引入vue文件-->
<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
    // 创建一个应用程序实例
    const vm = Vue.createApp({
        // 该函数返回数据对象
        data() {
            return {
                selected: [],
                options: [
                    { text: '课程1', value: 'Java开发班'},
                    { text: '课程2', value: 'Python开发班'},
                    { text: '课程3', value: '前端开发班'},

                ]
            }
        }
    }).mount('#app');
</script>


</body>
</html>
